Journals and Conferences

Introduction: The northern region of Mars where Phoenix landed in 2008 is constituted by extensive plains largely occupied by small-scale polygonal terrains, which were difficult to perceive in… (More)

and the landscape seen on the first images acquired on the surface confirmed what was already known since the HiRISE camera began scrutinizing the Martian surface with unprecedented detail, that the… (More)

An algorithm is developed which takes advantage of the posit ive characteristics of integration and differentiation operations which can produce a n optimal time-domain estimate of a velocity signal… (More)

Introduction: The characteristics of Martian soils are a matter of clear importance when considering the problems that can arise for a rover traversing areas where loose particles are predominant –… (More)

Since 1988 the Federal Constitution of Brazil declared health care as a public right to be provided as a duty of the state(1). Thus the Unique Public System ("Sistema Unico de Saúde-SUS"), Ministry… (More)

Linearised models are often invoked as a starting point to study complex dynamical systems. Besides their attractive mathematical simplicity, they have a central role for determining the stability… (More)

Marine anthropogenic litter was analysed in eleven beaches along the Portuguese coast, over a two-year period (2011-2013). Of all collected items, 99% were plastic and 68% were microplastics (MP; 1-5… (More)

Most musical instruments consist of dynamical subsystems connected at a number of constraining points through which energy flows. For physical sound synthesis, one important difficulty deals with… (More)